If you want to trade your indicator, make sure that if the market is a 24 hour market, your calculation base has to be the H+L+C/3 of the bar, and only the close.
That same thing applies to whatever market you trade on a short term basis (ie lower than daily charts).
Many people use indicators calculated on the close as if the highs and lows would not matter at all....
Besides the KISS thing, i would advise taking an EMA of the HLC3 and seeing if that suits your purpose.
Remember: You need not be a programming or tech analyst to be a trader.
Word!